Protect yourself and your family from the threat of this toxic, odorless gas with the CO400 First Alert Battery Powered Carbon Monoxide Alarm. It features a permanently installed electrochemical carbon monoxide sensor with the most accurate technology and 85 decibel alarm horn. This carbon monoxide smoke alarm also features a mute button to quiet the alert horn temporarily. The First Alert smoke alarm measures the level of the carbon monoxide in the air and will activate the alarm immediately, if the level rises or is consistently present. This First Alert carbon monoxide alarm comes in a 2-pack and is powered by two AA replaceable alkaline batteries. It includes a test/silence button to test its functionality while silencing the alarm. The modern and compact design allows you to place it anywhere you need it. The CO400 First Alert Battery Powered Carbon Monoxide Alarm alerts you to replace the batteries with an audible and visual signal.

Protect yourself and your family from the threat of this toxic, odorless gas with the CO400 First Alert Battery Powered Carbon Monoxide Alarm. It features a permanently installed electrochemical carbon monoxide sensor with the most accurate technology and 85 decibel alarm horn. This carbon monoxide smoke alarm also features a mute button to quiet the alert horn temporarily. The First Alert smoke alarm measures the level of the carbon monoxide in the air and will activate the alarm immediately, if the level rises or is consistently present. This First Alert carbon monoxide alarm comes in a 2-pack and is powered by two AA replaceable alkaline batteries. It includes a test/silence button to test its functionality while silencing the alarm. The modern and compact design allows you to place it anywhere you need it. The CO400 First Alert Battery Powered Carbon Monoxide Alarm alerts you to replace the batteries with an audible and visual signal.